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Denis Excoffier discovered that the PAM MOTD module in Ubuntu did not correctly handle path permissions when creating user file stamps. A local attacker could exploit this to gain root privilieges.

USN-959-1 fixed vulnerabilities in PAM. This update provides the corresponding updates for Ubuntu 10.10. Original advisory details: Denis Excoffier discovered that the PAM MOTD module in Ubuntu did not correctly handle path permissions when creating user file stamps. A local attacker could exploit this to gain root privilieges.

It was discovered that FUSE could be tricked into incorrectly updating the mtab file when mounting filesystems. A local attacker, with access to use FUSE, could unmount arbitrary locations, leading to a denial of service.

USN-1045-1 fixed vulnerabilities in FUSE. This update to util-linux adds support for new options required by the FUSE update. Original advisory details: It was discovered that FUSE could be tricked into incorrectly updating the mtab file when mounting filesystems. A local attacker, with access to use FUSE, could unmount arbitrary locations, leading to a denial of service.

Sebastian Krahmer discovered that GDM did not properly drop privileges when handling the cache directories used to store users" dmrc and face icon files. This could allow a local attacker to change the ownership of arbitrary files, thereby gaining root privileges.

exim4: Exim mail transfer agent Exim could be made to run arbitrary code under some conditions.

foomatic-filters: OpenPrinting printer support - filters An attacker could send crafted input to Foomatic and cause it to run programs as the "lp" user.

update-manager: GNOME application that manages apt updates - update-notifier: Daemon which notifies about package updates Update Manager could be made to overwrite files as the administrator.

lightdm: Display Manager Several security issues were fixed in Light Display Manager.

clamav: Anti-virus utility for Unix Details: USN-3722-1 fixed vulnerabilities in ClamAV. The updated ClamAV version removed some configuration options which caused the daemon to fail to start in environments where the ClamAV configuration file was manually edited. This update fixes the problem. We apologize for the inconvenience. Original advisory USN-3722-1 introduced a regression in ClamAV.


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